<template>
  <el-menu default-active="1-4-1" class="el-menu-vertical-demo" background-color="#545c64" text-color="#fff" active-text-color="#ffd04b" @open="handleOpen" @close="handleClose" :collapse="isCollapse">
    <h3>{{isCollapse? '后台':'通用后台管理'}}</h3>
    <el-menu-item @click="clickMenu(item)" v-for="item in noChildern" :index="item.path" :key="item.path">
        <i :class="'el-icon-'+item.icon"></i>
        <span slot="title">{{item.label}}</span>
    </el-menu-item>
    <el-submenu v-for="item in hasChildern" :index="item.path" :key="item.path">
        <template slot="title">
          <i :class="'el-icon-' + item.icon"></i>
          <span slot="title">{{item.label}}</span>
        </template>
        <el-menu-item-group v-for="(subItem,subIndex) in item.children" :index="subIndex" :key="subItem.path">
            <el-menu-item @click="clickMenu(subItem)" >{{subItem.label}}</el-menu-item>
        </el-menu-item-group>
    </el-submenu>

</el-menu>
</template>

<style lang="less" scope>
  .el-menu-vertical-demo:not(.el-menu--collapse) {
    width: 200px;
    min-height: 400px;

  }
  .el-menu{
      height: 100%;
      border: none;
      h3 {
          color: #fff;
          text-align:center;
          line-height:48px;
      }
  }
</style>

<script>
  export default {
    data() {
      return {
        // isCollapse: false,
        menu:[
	{
		path:'/home',
		name:'home',
		label:'首页',
		icon:'s-home',
		url:'Home/Home'
	},
	{
		path:'/mall',
		name:'mall',
		label:'商品管理',
		icon:'video-play',
		url:'MallManage/MallManage'
	},   
	{
		path:'/user',
		name:'User',
		label:'用户管理',
		icon:'user',
		url:'UserManage/UserManage'
	},
	{
		path:'其他',
		name:'location',
    label:'其他',
		icon:'location',
		children:
		[
			{
				path:'/page1',
				name:'page1',
				label:'页面1',
				icon:'setting',
				url:'Other/PageOne'
			},
			{
				path:'/page2',
				name:'page2',
				label:'页面2',
				icon:'setting',
				url:'Other/PageTwo'
			}	
		]
	},
]
      };
    },
    methods: {
      handleOpen(key, keyPath) {
        console.log(key, keyPath);
      },
      handleClose(key, keyPath) {
        console.log(key, keyPath);
      },
      clickMenu(item){
          this.$router.push({
              name:item.name
          })
          this.$store.commit('selectMenu',item)
      }
      
    },
    computed:{
        noChildern(){
            return  this.menu.filter(item => !item.children)
        },
        hasChildern(){
            return this.menu.filter(item => item.children)
        },
        isCollapse(){
          return this.$store.state.tab.isCollapse
        }
    }
  }
</script>